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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.395 by greg, Tue Nov 16 03:30:45 2021 UTC vs.
Revision 1.401 by greg, Fri Feb 4 20:11:49 2022 UTC

# Line 2453 | Line 2453 | the correct set of primaries based on how the system w
2453  
2454   Added automatic flushing to the output of total, except when the -r
2455   (running subtotals) option is used.
2456 +
2457 + Improved behavior of little-used -aw option, so that it avoids sea-level
2458 + rise caused by adding its own estimate back into the ambient level remainder.
2459 + It ended up being simple enough to derate the final average by the factor
2460 + corresponding to average surface absorpition, thus removing the average
2461 + from the final bounce estimate.
2462 +
2463 + Introduced ies2rad upgrades by Randolph Fritz.  Randolph says it
2464 + fixes the following problems:
2465 +
2466 +        1. Generates correct Radiance geometry for spheres in 1995, 2002,
2467 +        and 2019 IES files.
2468 +
2469 +        2. Generates correct Radiance geometry for vertical cylinders that
2470 +        are taller than they are wide.
2471 +
2472 +        3. Ignores the file source ("File Generation Type") field in the
2473 +        2019 version of the file, which would otherwise be incorrectly used
2474 +        as an output multiplier.
2475 +
2476 +    It also offers the following enhancements:
2477 +
2478 +        1. Shape information is included in the .rad file comments.
2479 +
2480 +        2. 1995, 2002, and 2019-version luminous opening geometry is
2481 +        accounted for.
2482 +
2483 +        3. The 2002 and 2019 IES file versions are recognized and
2484 +        processed appropriately.
2485 +
2486 +        4. I have made an attempt to do something intelligent with less
2487 +        common "luminous opening" shapes in the 1995, 2002, and 2019 versions
2488 +        of the standard, though I have not implemented any support for new
2489 +        geometry; approximations are substituted and warning messages issued.
2490 +        Unfortunately, this code is not tested, since I don't have any IES
2491 +        files that use these shapes.
2492 +
2493 + Added support for depth-of-field blurring in vwrays using -pd option.
2494 + Also, made -c count work with vwrays -i, producing multiple samples
2495 + per indicated pixel position.  At the same time, support for the -pd
2496 + option was added to rtpict, which calls on vwrays for its samples.
2497 +
2498 + Fixed issue with BSDFs that didn't obey reciprocity, where direct
2499 + sampling wasn't following exactly with indirect sampling.  This was
2500 + discovered and reported by Jon Sargent.
2501 +
2502 + Created checkBSDF tool to test XML BSDF reciprocity and perform similar
2503 + sanity checks.
2504 +
2505 + Added -O option to pvalue and pextrem to report watts/sr/m^2 even if
2506 + picture is XYZE.

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